1 files changed, 15 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-8-8.js b/js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-8-8.js
new file mode 100644
index 0000000000..d31afa8f21
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-8-8.js
@@ -0,0 +1,15 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-array.prototype.lastindexof
+description: Array.prototype.lastIndexOf must return correct index (Array)
+---*/
+
+var b = new Array("0,1");
+var a = new Array(0, b, "0,1", 3);
+
+assert.sameValue(a.lastIndexOf(b.toString()), 2, 'a.lastIndexOf(b.toString())');
+assert.sameValue(a.lastIndexOf("0,1"), 2, 'a.lastIndexOf("0,1")');
+
+reportCompare(0, 0);